Please use this identifier to cite or link to this item: https://biore.bio.bg.ac.rs/handle/123456789/3776
Title: Bloom of the potentially toxic cyanobacterium P. rubescens: seasonal distribution and possible drivers of its proliferation in the Vrutci reservoir (Serbia)
Authors: Ponjavić Blagojević, Ana
Kostić, Dušan
Marjanović, Prvoslav
Trbojević, Ivana 
Popović, Slađana 
Predojević, Dragana 
Subakov-Simić, Gordana 
Keywords: Planktothrix rubescens;Bloomforming cyanobacteria;Water-level fluctuations;Drinking water reservoir;Water supply;Water retention time
Issue Date: 10-Dec-2019
Rank: M23
Publisher: Sciendo
Journal: Acta Veterinaria Hungarica
Abstract: 
Planktothrix rubescens is a filamentous cyanobacterium with a worldwide distribution in lakes and reservoirs of varying size and morphology. The objective of this study was to identify the population dynamics and the major drivers of P. rubescens blooms. Samples for qualitative and quantitative analysis of phytoplankton were collected every month in 2014 and 2015 from stationary depths, while the main physical parameters were measured in situ along the water column. Samples for chemical analysis were collected below the surface, at mid-depth (metalimnion) and near the bottom. In the periods of thermal stratification, P. rubescens formed the maximum biomass in the metalimnion, however, its volume-weighted biomass reached the maximum value in the winter mixing period (4.40 mm3 l−1). Changes in the P. rubescens population in the reservoir were related to changes in the measured environmental parameters. Significant physical, hydrological, meteorological and chemical parameters were distinguished based on the multivariate analysis. The variable associated with water-level fluctuations showed the highest positive correlation with P. rubescens biomass. We conclude that it is necessary to establish water quality monitoring and prevent excessive water-level fluctuations to ensure a high quality of water supplies from the reservoir.
URI: https://biore.bio.bg.ac.rs/handle/123456789/3776
ISSN: 1730-413X
1897-3191
DOI: 10.2478/ohs-2019-0029
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